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公开(公告)号：US4812425A
公开(公告)日：1989-03-14
申请号：US148462
申请日：1988-01-26
CPC分类号： C04B35/58071 , C04B35/632
摘要： The invention relates to the production of desirably purified refractory metal borides. The method can be used to purify even commercially available material. Careful attention is directed to the oxygen impurity level of the refractory metal boride and such will usually be maximized at a very low level. Critical attention is directed to the oxygen to carbon molar ratio. Heating of impure materials, typically presented in consolidated form and having constituent adjustments in accordance with invention principles, can lead to the preparation of products of highly desirable density, on the one hand, and prepare products of extremely low contamination levels, on the other hand.
摘要翻译： 本发明涉及生产理想的纯化难熔金属硼化物。 该方法可用于纯化均匀的市售材料。 仔细注意难熔金属硼化物的氧杂质水平，这通常在非常低的水平下最大化。 关键注意的是氧碳摩尔比。 通常以固结形式呈现并且根据本发明原理进行组成调整的不纯物质的加热可以导致制备高度期望密度的产品，另一方面制备极低污染水平的产品 。
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公开(公告)号：US4543348A
公开(公告)日：1985-09-24
申请号：US467157
申请日：1983-02-16
摘要： An electrode having a lead base and a catalyst is manufactured by (a) compressing titanium sponge particles so as to consolidate them to a coherent porous layer, (b) applying the catalyst to the titanium sponge particles, and (c) fixing the layer of consolidated sponge particles to the lead base. The catalyst is formed on the titanium sponge particles before or after their consolidation to a coherent layer. This layer may be produced and fixed to the base in a single compressing and fixing step combining (a) and (c). Oxygen is anodically evolved at a reduced, stable potential by means of this electrode, so that it can be usefully applied as an anode in processes for electrowinning metals from acid electrolytes.
摘要翻译： 通过以下方法制造具有铅基和催化剂的电极：（a）压缩钛海绵颗粒以将其固结在粘着多孔层上，（b）将该催化剂施加到钛海绵颗粒上，和（c）将 固结海绵颗粒到铅基。 催化剂在固化到相干层之前或之后在钛海绵颗粒上形成。 可以在组合（a）和（c）的单个压缩和固定步骤中生产并固定该层。 氧气通过该电极在降低的稳定电位下阳极放电，使得其可以有用地用作阳极，用于从酸性电解质中电解提取金属。
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