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The samples were prepared by heating compacted mixtures of metal powder and red phosphorus powder in alunina crucibles under a flow of high purityargon in a rf-heated furnace.The reactions were exothermic and usually became self-sustaining at about 700。c.The mixtures were fired for 1h at a temperature 100c below their incongruent melting points to complete the reaction;firing temperatures varied from 900c to 1300c.The samples were examined matallographically for completeness of reaction and for temperatures varied from 900c to 1300c.The samples were examined matallographically for completeness of reaction and for temperatures varied from 900c to 1300c.The samples were examined matallographically for completeness of reaction and for added to the powdered sample,which was then mixed,compacted,and refired until an essentially single-phase product was obtained. 本帖关键词：phosphorus completeness furnace firing reaction |
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zcy86520
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2楼2009-12-03 12:35:39
| 样品通过加热金属粉末和在alunina坩埚的红色磷粉末变紧密的混合物准备在高purityargon之下流程在一个rf激昂的熔炉的。反应是放热的和通常变得自立在700。c.The混合物为1h大约被射击在他们不和谐的熔点之下的一个温度100c完成反应; 生火温度从900c变化了到1300c.The样品为反应的完整性被审查了matallographically，并且为从900c变化的温度到1300c.The样品为反应的完整性被审查了matallographically和为从900c变化的temperatures到1300c.The样品被审查了matallographically为反应的完整性和为增加到搽粉的样品，被混合，然后变紧密，并且refired，直到一个本质上单阶产品获得了。 |
3楼2009-12-03 15:41:01
4楼2009-12-03 22:26:29