Process for producing titanium carbide whisker

• US 5,256,243 A
• Filed: 11/12/1991
• Issued: 10/26/1993
• Est. Priority Date: 11/26/1990
• Status: Expired due to Fees

• Current Assignee: Tokai Carbon Company Limited
• Original Assignee: Tokai Carbon Company Limited
• Inventors: Kida, Tohru
• Primary Examiner(s): Chaudhuri, Olik
• Assistant Examiner(s): HITESHEW, FELISA CARLA
• Application Number:
  US07/790,321
• Time in Patent Office: 714 Days
• Field of Search: 156/603, 156/610, 156/611, 156/613, 156/DIG. 68, 156/DIG. 75, 156/DIG. 112, 423/439
• US Class Current: 117/75
• CPC Class Codes: C30B 25/005 Growth of whiskers or needles
• CPC Class Codes: C30B 29/36 Carbides

Abstract

A process for producing a titanium carbide whisker, comprising the steps of: mixing 100 parts by weight of a titanium source comprising titanium dioxide and/or an alkali metal titanate with 50 to 200 parts by weight of a carbon source and 1 to 30 parts by weight of a transition metal chloride; and heating the resultant mixture at 1300° to 1700° C. in an inert gas atmosphere.

Claims

1. A process for producing a titanium carbide whisker, comprising the steps of:

mixing 100 parts by weight of a titanium source comprising titanium dioxide and/or an alkali metal titanate with 50 to 22 parts by weight of a carbon source, 1 to 30 parts by weight of a transition metal chloride, and 10 to 100 parts by weight of an alkali metal chloride to produce a mixture; and

heating the mixture at 1300°

to 1700°

C. in an inert gas atmosphere to produce a reaction product.

2. A process according to claim 1, wherein said mixture is compressed to a bulk density of 0.2 g/cm² or less before it is heated in said inert gas atmosphere.

3. A process according to claim 1, which further comprises adding the reaction product to a two-phase liquid comprising an organic solvent and an aqueous phase and shaking the mixture to separate the carbon source remaining unreacted on the side of said organic solvent phase and the formed titanium carbide on the side of the aqueous phase.