Low-melting potassium fluoroaluminate
Beschrieben wird die Herstellung eines Kaliumfluoraluminats mit niedrigem Schmelzpunkt, das als Flußmittel beim Aluminiumlöten brauchbar ist. Es wird aus Aluminiumhydroxid, Fluorwasserstoff und Kaliumhydroxid im wäßrigen Medium im Molverhältnis von Aluminium:Fluor:Kalium von etwa 1:5:2 hergestellt....
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| creator | BELT, HEINZ-JOACHIM RUDOLPH, WERNER SANDER, RUEDIGER |
| description | Beschrieben wird die Herstellung eines Kaliumfluoraluminats mit niedrigem Schmelzpunkt, das als Flußmittel beim Aluminiumlöten brauchbar ist. Es wird aus Aluminiumhydroxid, Fluorwasserstoff und Kaliumhydroxid im wäßrigen Medium im Molverhältnis von Aluminium:Fluor:Kalium von etwa 1:5:2 hergestellt. Nach dem Trocknen bei 80 °C im Vakuum weist das hergestellte Kaliumfluoraluminat einen Schmelzpunkt gemäß DSC im Bereich von ca. 548 °C auf.
Production of potassium aluminium fluoride, useful as low melting flux for aluminium brazing, involves reacting Al(OH)3, HF and KOH in an Al:F:K molar ratio of 1:5 plus or minus 0.2:2 plus or minus 0.1 in an aqueous medium to precipitate low melting potassium aluminium fluoride which, after vacuum drying at 80 degrees C, has a melting point of 546-550 degrees C (as determined by differential scanning calorimetry). Also claimed is potassium aluminium fluoride which is produced by the above method and which, after vacuum drying at 80 degrees C, has a melting point of 546-550 degrees C. |
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Production of potassium aluminium fluoride, useful as low melting flux for aluminium brazing, involves reacting Al(OH)3, HF and KOH in an Al:F:K molar ratio of 1:5 plus or minus 0.2:2 plus or minus 0.1 in an aqueous medium to precipitate low melting potassium aluminium fluoride which, after vacuum drying at 80 degrees C, has a melting point of 546-550 degrees C (as determined by differential scanning calorimetry). Also claimed is potassium aluminium fluoride which is produced by the above method and which, after vacuum drying at 80 degrees C, has a melting point of 546-550 degrees C.</description><edition>6</edition><language>eng ; fre ; ger</language><subject>CHEMISTRY ; CLADDING OR PLATING BY SOLDERING OR WELDING ; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS ; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ; INORGANIC CHEMISTRY ; MACHINE TOOLS ; METAL-WORKING NOT OTHERWISE PROVIDED FOR ; METALLURGY ; PERFORMING OPERATIONS ; SOLDERING OR UNSOLDERING ; TRANSPORTING ; WELDING ; WORKING BY LASER BEAM</subject><creationdate>1998</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980422&DB=EPODOC&CC=EP&NR=0837035A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980422&DB=EPODOC&CC=EP&NR=0837035A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BELT, HEINZ-JOACHIM</creatorcontrib><creatorcontrib>RUDOLPH, WERNER</creatorcontrib><creatorcontrib>SANDER, RUEDIGER</creatorcontrib><title>Low-melting potassium fluoroaluminate</title><description>Beschrieben wird die Herstellung eines Kaliumfluoraluminats mit niedrigem Schmelzpunkt, das als Flußmittel beim Aluminiumlöten brauchbar ist. Es wird aus Aluminiumhydroxid, Fluorwasserstoff und Kaliumhydroxid im wäßrigen Medium im Molverhältnis von Aluminium:Fluor:Kalium von etwa 1:5:2 hergestellt. Nach dem Trocknen bei 80 °C im Vakuum weist das hergestellte Kaliumfluoraluminat einen Schmelzpunkt gemäß DSC im Bereich von ca. 548 °C auf.
Production of potassium aluminium fluoride, useful as low melting flux for aluminium brazing, involves reacting Al(OH)3, HF and KOH in an Al:F:K molar ratio of 1:5 plus or minus 0.2:2 plus or minus 0.1 in an aqueous medium to precipitate low melting potassium aluminium fluoride which, after vacuum drying at 80 degrees C, has a melting point of 546-550 degrees C (as determined by differential scanning calorimetry). Also claimed is potassium aluminium fluoride which is produced by the above method and which, after vacuum drying at 80 degrees C, has a melting point of 546-550 degrees C.</description><subject>CHEMISTRY</subject><subject>CLADDING OR PLATING BY SOLDERING OR WELDING</subject><subject>COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS</subject><subject>CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING</subject><subject>INORGANIC CHEMISTRY</subject><subject>MACHINE TOOLS</subject><subject>METAL-WORKING NOT OTHERWISE PROVIDED FOR</subject><subject>METALLURGY</subject><subject>PERFORMING OPERATIONS</subject><subject>SOLDERING OR UNSOLDERING</subject><subject>TRANSPORTING</subject><subject>WELDING</subject><subject>WORKING BY LASER BEAM</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1998</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFD1yS_XzU3NKcnMS1coyC9JLC7OLM1VSMspzS_KT8wpzc3MSyxJ5WFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8a4BBhbG5gbGpo6GxkQoAQA3qydz</recordid><startdate>19980422</startdate><enddate>19980422</enddate><creator>BELT, HEINZ-JOACHIM</creator><creator>RUDOLPH, WERNER</creator><creator>SANDER, RUEDIGER</creator><scope>EVB</scope></search><sort><creationdate>19980422</creationdate><title>Low-melting potassium fluoroaluminate</title><author>BELT, HEINZ-JOACHIM ; RUDOLPH, WERNER ; SANDER, RUEDIGER</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0837035A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>1998</creationdate><topic>CHEMISTRY</topic><topic>CLADDING OR PLATING BY SOLDERING OR WELDING</topic><topic>COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS</topic><topic>CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING</topic><topic>INORGANIC CHEMISTRY</topic><topic>MACHINE TOOLS</topic><topic>METAL-WORKING NOT OTHERWISE PROVIDED FOR</topic><topic>METALLURGY</topic><topic>PERFORMING OPERATIONS</topic><topic>SOLDERING OR UNSOLDERING</topic><topic>TRANSPORTING</topic><topic>WELDING</topic><topic>WORKING BY LASER BEAM</topic><toplevel>online_resources</toplevel><creatorcontrib>BELT, HEINZ-JOACHIM</creatorcontrib><creatorcontrib>RUDOLPH, WERNER</creatorcontrib><creatorcontrib>SANDER, RUEDIGER</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BELT, HEINZ-JOACHIM</au><au>RUDOLPH, WERNER</au><au>SANDER, RUEDIGER</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Low-melting potassium fluoroaluminate</title><date>1998-04-22</date><risdate>1998</risdate><abstract>Beschrieben wird die Herstellung eines Kaliumfluoraluminats mit niedrigem Schmelzpunkt, das als Flußmittel beim Aluminiumlöten brauchbar ist. Es wird aus Aluminiumhydroxid, Fluorwasserstoff und Kaliumhydroxid im wäßrigen Medium im Molverhältnis von Aluminium:Fluor:Kalium von etwa 1:5:2 hergestellt. Nach dem Trocknen bei 80 °C im Vakuum weist das hergestellte Kaliumfluoraluminat einen Schmelzpunkt gemäß DSC im Bereich von ca. 548 °C auf.
Production of potassium aluminium fluoride, useful as low melting flux for aluminium brazing, involves reacting Al(OH)3, HF and KOH in an Al:F:K molar ratio of 1:5 plus or minus 0.2:2 plus or minus 0.1 in an aqueous medium to precipitate low melting potassium aluminium fluoride which, after vacuum drying at 80 degrees C, has a melting point of 546-550 degrees C (as determined by differential scanning calorimetry). Also claimed is potassium aluminium fluoride which is produced by the above method and which, after vacuum drying at 80 degrees C, has a melting point of 546-550 degrees C.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING INORGANIC CHEMISTRY MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM |
| title | Low-melting potassium fluoroaluminate |
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