Intermetallic growth kinetics of 2N gold wire ball bonds on aluminium bond pads annealed at 175 degree C
(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image).Gold ball bonding wires of 2N purity were bonded to Si devices with aluminium alloy bond pad metallisation. Specimens were subjected to isothermal annealing at 175 degree C in a fan-circulated oven in an air environment for...
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| Veröffentlicht in: | Gold bulletin (World Gold Council) 2016-12, Vol.49 (3-4), p.63-73 |
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| creator | Breach, C D |
| description | (ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image).Gold ball bonding wires of 2N purity were bonded to Si devices with aluminium alloy bond pad metallisation. Specimens were subjected to isothermal annealing at 175 degree C in a fan-circulated oven in an air environment for various times t. Samples of ball bonds from each specimen were cross-sectioned, and the total intermetallic thickness x at the centre of the ball bonds was measured. The kinetics of x versus t were modelled using a power law expression ... with growth parameter [thetas] sub(1) and constrained parameter 0 |
| doi_str_mv | 10.1007/s13404-016-0184-6 |
| format | Article |
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Specimens were subjected to isothermal annealing at 175 degree C in a fan-circulated oven in an air environment for various times t. Samples of ball bonds from each specimen were cross-sectioned, and the total intermetallic thickness x at the centre of the ball bonds was measured. The kinetics of x versus t were modelled using a power law expression ... with growth parameter [thetas] sub(1) and constrained parameter 0<[thetas] sub(2) less than or equal to 1. The parameter [thetas] sub(2) is supposedly capable of differentiating between diffusion controlled intermetallic growth (grain boundary and/or volume diffusion) and interfacial reaction controlled growth with the presence/absence of grain growth solely based on its numerical value. The parameters [thetas] sub(1) and [thetas] sub(2) and the regression function were obtained by log-transformation of both the response variable x and the explanatory variable t and data fitting using simple linear regression (SLR), taking care to perform diagnostic checks to confirm that transformed data satisfied the requirements of SLR. Simulated intermetallic thickness data obtained by sampling from lognormal distributions was observed to closely approximate the experimental observations. Values of the exponent [thetas] sub(2) were observed in the range 0.2-0.4, which was interpreted as indicative of grain boundary dominated interdiffusion with grain growth.</description><identifier>ISSN: 2364-821X</identifier><identifier>EISSN: 2190-7579</identifier><identifier>DOI: 10.1007/s13404-016-0184-6</identifier><language>eng</language><subject>Bonding ; Diffusion ; Gold ; Grain boundaries ; Intermetallics ; Mathematical models ; Parameters ; Regression</subject><ispartof>Gold bulletin (World Gold Council), 2016-12, Vol.49 (3-4), p.63-73</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Breach, C D</creatorcontrib><title>Intermetallic growth kinetics of 2N gold wire ball bonds on aluminium bond pads annealed at 175 degree C</title><title>Gold bulletin (World Gold Council)</title><description>(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image).Gold ball bonding wires of 2N purity were bonded to Si devices with aluminium alloy bond pad metallisation. Specimens were subjected to isothermal annealing at 175 degree C in a fan-circulated oven in an air environment for various times t. Samples of ball bonds from each specimen were cross-sectioned, and the total intermetallic thickness x at the centre of the ball bonds was measured. The kinetics of x versus t were modelled using a power law expression ... with growth parameter [thetas] sub(1) and constrained parameter 0<[thetas] sub(2) less than or equal to 1. The parameter [thetas] sub(2) is supposedly capable of differentiating between diffusion controlled intermetallic growth (grain boundary and/or volume diffusion) and interfacial reaction controlled growth with the presence/absence of grain growth solely based on its numerical value. The parameters [thetas] sub(1) and [thetas] sub(2) and the regression function were obtained by log-transformation of both the response variable x and the explanatory variable t and data fitting using simple linear regression (SLR), taking care to perform diagnostic checks to confirm that transformed data satisfied the requirements of SLR. Simulated intermetallic thickness data obtained by sampling from lognormal distributions was observed to closely approximate the experimental observations. Values of the exponent [thetas] sub(2) were observed in the range 0.2-0.4, which was interpreted as indicative of grain boundary dominated interdiffusion with grain growth.</description><subject>Bonding</subject><subject>Diffusion</subject><subject>Gold</subject><subject>Grain boundaries</subject><subject>Intermetallics</subject><subject>Mathematical models</subject><subject>Parameters</subject><subject>Regression</subject><issn>2364-821X</issn><issn>2190-7579</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqVijFPwzAUhC0EEhX0B3R7I4vBL3bsZK5AsDAxsFVu8pq6OHaxHfXvYyH-ACed7vTdMbZB8YhCmKeMUgnFBerqTnF9xVYN9oKb1vTXtUuteNfg5y1b53wSVb1CiXrFjm-hUJqpWO_dAFOKl3KELxeouCFDPEDzDlP0I1xcItjXG-xjGOsUwPpldsEt8y-Cs63YhkDW0wi2AJoWRpoSEWzv2c3B-kzrv7xjDy_PH9tXfk7xe6FcdrPLA3lvA8Ul77DTqjWylyj_cf0B9fpRrA</recordid><startdate>20161201</startdate><enddate>20161201</enddate><creator>Breach, C D</creator><scope>7QF</scope><scope>7TA</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20161201</creationdate><title>Intermetallic growth kinetics of 2N gold wire ball bonds on aluminium bond pads annealed at 175 degree C</title><author>Breach, C D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_miscellaneous_18645739313</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Bonding</topic><topic>Diffusion</topic><topic>Gold</topic><topic>Grain boundaries</topic><topic>Intermetallics</topic><topic>Mathematical models</topic><topic>Parameters</topic><topic>Regression</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Breach, C D</creatorcontrib><collection>Aluminium Industry Abstracts</collection><collection>Materials Business File</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Gold bulletin (World Gold Council)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Breach, C D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Intermetallic growth kinetics of 2N gold wire ball bonds on aluminium bond pads annealed at 175 degree C</atitle><jtitle>Gold bulletin (World Gold Council)</jtitle><date>2016-12-01</date><risdate>2016</risdate><volume>49</volume><issue>3-4</issue><spage>63</spage><epage>73</epage><pages>63-73</pages><issn>2364-821X</issn><eissn>2190-7579</eissn><abstract>(ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image).Gold ball bonding wires of 2N purity were bonded to Si devices with aluminium alloy bond pad metallisation. Specimens were subjected to isothermal annealing at 175 degree C in a fan-circulated oven in an air environment for various times t. Samples of ball bonds from each specimen were cross-sectioned, and the total intermetallic thickness x at the centre of the ball bonds was measured. The kinetics of x versus t were modelled using a power law expression ... with growth parameter [thetas] sub(1) and constrained parameter 0<[thetas] sub(2) less than or equal to 1. The parameter [thetas] sub(2) is supposedly capable of differentiating between diffusion controlled intermetallic growth (grain boundary and/or volume diffusion) and interfacial reaction controlled growth with the presence/absence of grain growth solely based on its numerical value. The parameters [thetas] sub(1) and [thetas] sub(2) and the regression function were obtained by log-transformation of both the response variable x and the explanatory variable t and data fitting using simple linear regression (SLR), taking care to perform diagnostic checks to confirm that transformed data satisfied the requirements of SLR. Simulated intermetallic thickness data obtained by sampling from lognormal distributions was observed to closely approximate the experimental observations. Values of the exponent [thetas] sub(2) were observed in the range 0.2-0.4, which was interpreted as indicative of grain boundary dominated interdiffusion with grain growth.</abstract><doi>10.1007/s13404-016-0184-6</doi></addata></record> |
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| ispartof | Gold bulletin (World Gold Council), 2016-12, Vol.49 (3-4), p.63-73 |
| issn | 2364-821X 2190-7579 |
| language | eng |
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| source | Alma/SFX Local Collection; SpringerLink Journals - AutoHoldings |
| subjects | Bonding Diffusion Gold Grain boundaries Intermetallics Mathematical models Parameters Regression |
| title | Intermetallic growth kinetics of 2N gold wire ball bonds on aluminium bond pads annealed at 175 degree C |
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