公开(公告)号：WO2009129458A3

公开(公告)日：2010-01-28

申请号：PCT/US2009040949

申请日：2009-04-17

Applicant: CIRCULON HUNGARY LTD ,  NANIS LEONARD ,  YUAN SHI ,  FORKIN MATTHEW

Inventor： NANIS LEONARD ,  YUAN SHI ,  FORKIN MATTHEW

IPC: C01B33/24 ,  C01B33/10

CPC classification number: C01B33/03 ,  C01B33/103 ,  C01B33/10705 ,  C01B33/24

Abstract: An improved process for producing high purity silicon results from the reaction of sodium with pure silicon tetrafluoride gas, which produces sodium fluoride as a by-product. The silicon tetrafluoride gas is formed by decomposing sodium fluorosilicate. The sodium fluorosilicate is produced by precipitation when fluorosilicic acid (FSA) is reacted with the by-product sodium fluoride in closed loop process. Likewise, the fluorosilicic acid is preferably formed at high purity using a source material that consists essentially of silica by reacting the by-product sodium fluoride with an acid to create reactive fluoride ions.

Abstract translation: 产生高纯度硅的改进方法是由钠与纯四氟化硅气体的反应产生的，其产生作为副产物的氟化钠。 通过分解氟硅酸钠形成四氟化硅气体。 当氟硅酸（FSA）在闭环过程中与副产物氟化钠反应时，氟硅酸钠通过沉淀产生。 同样地，氟硅酸优选以高纯度形成，使用基本上由二氧化硅组成的源材料，使副产物氟化钠与酸反应以产生活性氟离子。

公开(公告)号：WO2004064114A3

公开(公告)日：2005-01-20

申请号：PCT/US2004000270

申请日：2004-01-07

Applicant: CABOT CORP ,  MICHALUK CHRISTOPHER A ,  YUAN SHI ,  MAGUIRE JAMES D

Inventor： MICHALUK CHRISTOPHER A ,  YUAN SHI ,  MAGUIRE JAMES D

IPC: B22F1/00 ,  C23C8/02 ,  C23C8/80 ,  C23C14/34 ,  H01G9/052 ,  C23C8/24

CPC classification number: H01G9/0525 ,  B22F1/0088 ,  B22F2998/00 ,  B22F2999/00 ,  C23C8/02 ,  C23C8/80 ,  C23C14/3414 ,  H01J37/3426 ,  Y10T428/12049 ,  Y10T428/12104 ,  B22F3/15 ,  B22F3/20 ,  B22F2201/02

Abstract: A method of forming a sputtering target and other metal articles having controlled oxygen and nitrogen content levels and the articles so formed are described. The method includes surface-nitriding a deoxidized metal powder and further includes consolidating the powder by a powder metallurgy technique. Preferred metal powders include, but are not limited to, valve metals, including tantalum, niobium, and alloys thereof.

Abstract translation: 描述了形成具有受控的氧和氮含量水平的溅射靶和其它金属制品的方法以及如此形成的制品。 该方法包括对脱氧金属粉末进行表面氮化，还包括通过粉末冶金技术固化粉末。 优选的金属粉末包括但不限于阀金属，包括钽，铌及其合金。