Bonded articles and a process for producing the same

Details Bonded articles and a process for producing the same Bonded articles and a process for producing the same

1997-10-24

2000-06-06

Speer, Timothy M.

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Particular or specific manner of positioning, arranging, or...

264624, 264681, 264682, 264683, B32B 900

Patent

active

060714654

ABSTRACT:
A process for producing a bonded article of ceramic bodies comprising steps of: machining the ceramic bodies to be bonded to form machined surfaces with average surface roughnesses (Ra) of not more than 0.2 .mu.m and flatnesses of not more than 0.2 .mu.m; applying solution containing a bonding aid on at least one of the machined surfaces; contacting the machined surfaces with each other to produce an assembly; and subjecting the assembly to a heat treatment to produce the bonded article. The roughnesses and the flatnesses may preferably be not more than 0.1 .mu.m. The bonding aid may preferably be a sintering aid applicable to at least one of the ceramic bodies. The ceramic bodies may preferably be one or more material selected from a group consisting of aluminum nitride and silicon nitride. The bonding aid may preferably be one or more bonding aid selected from a group consisting of a substance of yttrium and a substance of ytterbium. In the article, a layer rich in elements contained in a bonding aid is formed along the bonding interface of the article and ceramic particles are grown across the bonding interface.

REFERENCES:
patent: 4960736 (1990-10-01), Luxzcz
patent: 5240171 (1993-08-01), Newkirk
patent: 5306895 (1994-04-01), Ushikoshi
patent: 5721062 (1998-02-01), Kobayashi
Yogo Kyokaishi, vol. 91, No. 11, 1983, Japan, pp. 520-522, S. Kanzaki et al.: "Diffusion joining of silicon nitride ceramics", p. 522.
Chemical Abstracts, vol. 82, No. 22, Jun. 2, 1975, Columbus, Ohio, US; Abstract No. 144178, A. Tsumie et al.: "Adhering heat-resistant, reinforced composite materials".

Affiliated with

Also associated with

Rating

Bonded articles and a process for producing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bonded articles and a process for producing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bonded articles and a process for producing the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2211010