ETCH-TUNNELS IN LITHIUM FLUORIDE CRYSTALS AND CONCERNING 'ANOMALOUS' SOLUTION AND ETCHING PHENOMENA

The dissolution and growth behavior of LiF crystals in aqueous solutions containing longchain fatty acids as step-poisons was investigated. Both positive-crystals (whiskers and platelets) and negative-crystals (etch- tunnels) can be grown respectively from supersaturated and undersaturated solutions...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Westwood, A R, Rubin, H, Opperhauser, H, Goldheim, D L
Format:	Report
Sprache:	eng
Schlagworte:	CHEMICAL MILLING CORROSION CORROSIVE LIQUIDS Crystallography CRYSTALS DEGRADATION ETCHED CRYSTALS FATTY ACIDS FLUORIDES GROWTH(PHYSIOLOGY) Industrial Chemistry and Chemical Processing LITHIUM COMPOUNDS SINGLE CRYSTALS SOLUTIONS(MIXTURES) STEARIC ACID
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

container_end_page
container_issue
container_start_page
container_title
container_volume
creator	Westwood, A R Rubin, H Opperhauser, H Goldheim, D L
description	The dissolution and growth behavior of LiF crystals in aqueous solutions containing longchain fatty acids as step-poisons was investigated. Both positive-crystals (whiskers and platelets) and negative-crystals (etch- tunnels) can be grown respectively from supersaturated and undersaturated solutions of LiF containing identical concentrations of stearic acid (approximately 2 x 10 to the -6th power N.). Dissolution behavior in stagnant environments is of particular interest for etch-tunnels; some 0.5 microns in diameter and more than 100 microns in length (negative-whiskers) were observed. Two types of etch-tunnel can be distinguished; those nucleated at a surface defect - such as a cleavage step or the point of emergence of a dislocation (D- type) and those nucleated at apparently random points on the crystal surface (R-type). Metallographic observations reveal that dislocations are not essential to negativecrystal growth.
format	Report
fullrecord	<record><control><sourceid>dtic_1RU</sourceid><recordid>TN_cdi_dtic_stinet_AD0273647</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>AD0273647</sourcerecordid><originalsourceid>FETCH-dtic_stinet_AD02736473</originalsourceid><addsrcrecordid>eNrjZEh2DXH20A0J9fNz9QlW8PRT8PEM8fAM9VVw8wn1D_J0cVVwDooMDnEESjr6uSg4-_s5uwb5efq5K6g7-vn7Ovr4hwarKwT7-4SGePr7gdWATAQpCPBwBapw9XPkYWBNS8wpTuWF0twMMm5ga1NKMpPji0sy81JL4h1dDIzMjc1MzI0JSAMAHv8xXQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>report</recordtype></control><display><type>report</type><title>ETCH-TUNNELS IN LITHIUM FLUORIDE CRYSTALS AND CONCERNING 'ANOMALOUS' SOLUTION AND ETCHING PHENOMENA</title><source>DTIC Technical Reports</source><creator>Westwood, A R ; Rubin, H ; Opperhauser, H ; Goldheim, D L</creator><creatorcontrib>Westwood, A R ; Rubin, H ; Opperhauser, H ; Goldheim, D L ; MARTIN MARIETTA CORP BALTIMORE MD RESEARCH INST FOR ADVANCED STUDIES</creatorcontrib><description>The dissolution and growth behavior of LiF crystals in aqueous solutions containing longchain fatty acids as step-poisons was investigated. Both positive-crystals (whiskers and platelets) and negative-crystals (etch- tunnels) can be grown respectively from supersaturated and undersaturated solutions of LiF containing identical concentrations of stearic acid (approximately 2 x 10 to the -6th power N.). Dissolution behavior in stagnant environments is of particular interest for etch-tunnels; some 0.5 microns in diameter and more than 100 microns in length (negative-whiskers) were observed. Two types of etch-tunnel can be distinguished; those nucleated at a surface defect - such as a cleavage step or the point of emergence of a dislocation (D- type) and those nucleated at apparently random points on the crystal surface (R-type). Metallographic observations reveal that dislocations are not essential to negativecrystal growth.</description><language>eng</language><subject>CHEMICAL MILLING ; CORROSION ; CORROSIVE LIQUIDS ; Crystallography ; CRYSTALS ; DEGRADATION ; ETCHED CRYSTALS ; FATTY ACIDS ; FLUORIDES ; GROWTH(PHYSIOLOGY) ; Industrial Chemistry and Chemical Processing ; LITHIUM COMPOUNDS ; SINGLE CRYSTALS ; SOLUTIONS(MIXTURES) ; STEARIC ACID</subject><creationdate>1961</creationdate><rights>Approved for public release; distribution is unlimited.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,778,883,27550,27551</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/AD0273647$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Westwood, A R</creatorcontrib><creatorcontrib>Rubin, H</creatorcontrib><creatorcontrib>Opperhauser, H</creatorcontrib><creatorcontrib>Goldheim, D L</creatorcontrib><creatorcontrib>MARTIN MARIETTA CORP BALTIMORE MD RESEARCH INST FOR ADVANCED STUDIES</creatorcontrib><title>ETCH-TUNNELS IN LITHIUM FLUORIDE CRYSTALS AND CONCERNING 'ANOMALOUS' SOLUTION AND ETCHING PHENOMENA</title><description>The dissolution and growth behavior of LiF crystals in aqueous solutions containing longchain fatty acids as step-poisons was investigated. Both positive-crystals (whiskers and platelets) and negative-crystals (etch- tunnels) can be grown respectively from supersaturated and undersaturated solutions of LiF containing identical concentrations of stearic acid (approximately 2 x 10 to the -6th power N.). Dissolution behavior in stagnant environments is of particular interest for etch-tunnels; some 0.5 microns in diameter and more than 100 microns in length (negative-whiskers) were observed. Two types of etch-tunnel can be distinguished; those nucleated at a surface defect - such as a cleavage step or the point of emergence of a dislocation (D- type) and those nucleated at apparently random points on the crystal surface (R-type). Metallographic observations reveal that dislocations are not essential to negativecrystal growth.</description><subject>CHEMICAL MILLING</subject><subject>CORROSION</subject><subject>CORROSIVE LIQUIDS</subject><subject>Crystallography</subject><subject>CRYSTALS</subject><subject>DEGRADATION</subject><subject>ETCHED CRYSTALS</subject><subject>FATTY ACIDS</subject><subject>FLUORIDES</subject><subject>GROWTH(PHYSIOLOGY)</subject><subject>Industrial Chemistry and Chemical Processing</subject><subject>LITHIUM COMPOUNDS</subject><subject>SINGLE CRYSTALS</subject><subject>SOLUTIONS(MIXTURES)</subject><subject>STEARIC ACID</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1961</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZEh2DXH20A0J9fNz9QlW8PRT8PEM8fAM9VVw8wn1D_J0cVVwDooMDnEESjr6uSg4-_s5uwb5efq5K6g7-vn7Ovr4hwarKwT7-4SGePr7gdWATAQpCPBwBapw9XPkYWBNS8wpTuWF0twMMm5ga1NKMpPji0sy81JL4h1dDIzMjc1MzI0JSAMAHv8xXQ</recordid><startdate>19611227</startdate><enddate>19611227</enddate><creator>Westwood, A R</creator><creator>Rubin, H</creator><creator>Opperhauser, H</creator><creator>Goldheim, D L</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>19611227</creationdate><title>ETCH-TUNNELS IN LITHIUM FLUORIDE CRYSTALS AND CONCERNING 'ANOMALOUS' SOLUTION AND ETCHING PHENOMENA</title><author>Westwood, A R ; Rubin, H ; Opperhauser, H ; Goldheim, D L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_AD02736473</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1961</creationdate><topic>CHEMICAL MILLING</topic><topic>CORROSION</topic><topic>CORROSIVE LIQUIDS</topic><topic>Crystallography</topic><topic>CRYSTALS</topic><topic>DEGRADATION</topic><topic>ETCHED CRYSTALS</topic><topic>FATTY ACIDS</topic><topic>FLUORIDES</topic><topic>GROWTH(PHYSIOLOGY)</topic><topic>Industrial Chemistry and Chemical Processing</topic><topic>LITHIUM COMPOUNDS</topic><topic>SINGLE CRYSTALS</topic><topic>SOLUTIONS(MIXTURES)</topic><topic>STEARIC ACID</topic><toplevel>online_resources</toplevel><creatorcontrib>Westwood, A R</creatorcontrib><creatorcontrib>Rubin, H</creatorcontrib><creatorcontrib>Opperhauser, H</creatorcontrib><creatorcontrib>Goldheim, D L</creatorcontrib><creatorcontrib>MARTIN MARIETTA CORP BALTIMORE MD RESEARCH INST FOR ADVANCED STUDIES</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Westwood, A R</au><au>Rubin, H</au><au>Opperhauser, H</au><au>Goldheim, D L</au><aucorp>MARTIN MARIETTA CORP BALTIMORE MD RESEARCH INST FOR ADVANCED STUDIES</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>ETCH-TUNNELS IN LITHIUM FLUORIDE CRYSTALS AND CONCERNING 'ANOMALOUS' SOLUTION AND ETCHING PHENOMENA</btitle><date>1961-12-27</date><risdate>1961</risdate><abstract>The dissolution and growth behavior of LiF crystals in aqueous solutions containing longchain fatty acids as step-poisons was investigated. Both positive-crystals (whiskers and platelets) and negative-crystals (etch- tunnels) can be grown respectively from supersaturated and undersaturated solutions of LiF containing identical concentrations of stearic acid (approximately 2 x 10 to the -6th power N.). Dissolution behavior in stagnant environments is of particular interest for etch-tunnels; some 0.5 microns in diameter and more than 100 microns in length (negative-whiskers) were observed. Two types of etch-tunnel can be distinguished; those nucleated at a surface defect - such as a cleavage step or the point of emergence of a dislocation (D- type) and those nucleated at apparently random points on the crystal surface (R-type). Metallographic observations reveal that dislocations are not essential to negativecrystal growth.</abstract><oa>free_for_read</oa></addata></record>
fulltext	fulltext_linktorsrc
identifier
ispartof
issn
language	eng
recordid	cdi_dtic_stinet_AD0273647
source	DTIC Technical Reports
subjects	CHEMICAL MILLING CORROSION CORROSIVE LIQUIDS Crystallography CRYSTALS DEGRADATION ETCHED CRYSTALS FATTY ACIDS FLUORIDES GROWTH(PHYSIOLOGY) Industrial Chemistry and Chemical Processing LITHIUM COMPOUNDS SINGLE CRYSTALS SOLUTIONS(MIXTURES) STEARIC ACID
title	ETCH-TUNNELS IN LITHIUM FLUORIDE CRYSTALS AND CONCERNING 'ANOMALOUS' SOLUTION AND ETCHING PHENOMENA
url	https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-16T15%3A31%3A36IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-dtic_1RU&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=unknown&rft.btitle=ETCH-TUNNELS%20IN%20LITHIUM%20FLUORIDE%20CRYSTALS%20AND%20CONCERNING%20'ANOMALOUS'%20SOLUTION%20AND%20ETCHING%20PHENOMENA&rft.au=Westwood,%20A%20R&rft.aucorp=MARTIN%20MARIETTA%20CORP%20BALTIMORE%20MD%20RESEARCH%20INST%20FOR%20ADVANCED%20STUDIES&rft.date=1961-12-27&rft_id=info:doi/&rft_dat=%3Cdtic_1RU%3EAD0273647%3C/dtic_1RU%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true