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公开(公告)号：US5894034A
公开(公告)日：1999-04-13
申请号：US928669
申请日：1997-09-12
申请人： Sara Andersson , Muhammed Mamoun
发明人： Sara Andersson , Muhammed Mamoun
CPC分类号： B22F1/025 , B22F9/22 , B22F9/24 , B22F2998/10
摘要： A method of making a hard constituent powder coated with Co and/or Ni in a solution by liquid reduction of the Co and/or Ni from a suitable metal compound with a polyol while keeping the powder in suspension, the polyol functioning both as a solvent and as a reducing agent at the same time. By separating the intermediate solid compound and hard constituent from the suspension before any by-products are formed and reducing the intermediate solid compound in the dry state by H.sub.2 for around 24 hours or by using an excess of about 10 times more moles polyol than moles metal, the polyol can be conserved or reused leading to improved cost efficiency of the process.
摘要翻译： 通过在保持粉末悬浮液的同时使Co和/或Ni从合适的金属化合物与多元醇液体还原而在溶液中制备硬质组分粉末的方法，所述多元醇既用作溶剂 并作为还原剂同时使用。 通过在形成任何副产物之前将悬浮液中的中间体固体化合物和硬组分分离出来，并将中间体固体化合物在干燥状态下用H2还原约24小时，或者通过使用多于摩尔数的多余摩尔多元醇 ，多元醇可以被保存或再利用，从而提高了该方法的成本效率。
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公开(公告)号：US5529804A
公开(公告)日：1996-06-25
申请号：US412930
申请日：1995-03-29
摘要： A process for the production of hard materials wherein hard constituent powders are coated with cobalt and/or nickel metal in solution by reducing the metals from a suitable compound such as an oxide, hydroxide or salt with a polyol while keeping the powder in suspension. The polyol functions both as a solvent and a reducing agent at the same time and is present in an amount of at least 5 times more moles polyol than moles metal. There is obtained an even distribution of the cobalt and/or nickel over the surface of the hard constituent powder without the formation of islands of pure metal.
摘要翻译： 一种制备硬质材料的方法，其中硬质组分粉末在溶液中用钴和/或镍金属涂覆，通过在保持粉末悬浮液的同时将多种金属从合适的化合物如氧化物，氢氧化物或盐与多元醇一起还原。 多元醇同时作为溶剂和还原剂起作用，并且以多于金属摩尔量的多元醇的摩尔量的至少5倍的量存在。 在硬质成分粉末的表面上均匀分布了钴和/或镍，而不形成纯金属岛。
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