公开(公告)号：US20220242793A1

公开(公告)日：2022-08-04

申请号：US17587800

申请日：2022-01-28

Applicant: MATERION CORPORATION

Inventor： Sekyung CHANG ,  Mario E. COTA ,  Robert E. KUSNER ,  Fritz GRENSING

IPC: C04B35/18 ,  C04B35/626

Abstract: A process of synthesizing a yttrium aluminum garnet (YAG) powder. The process comprises introducing powders of yttria and silica to form a powder mixture, wherein alumina is not added to the powder mixture. Milling the powder mixture in the presence of an alumina grinding media and a solvent forms a powder slurry. Processing the powder slurry forms a green compact. Calcining the green compact at a temperature of from 1100° C. to 1650° C. for greater than 8 hours in air to 50% or less theoretical density forms a YAG compact of at least 92 wt % Y3Al5O12. Milling the YAG compact, without a grinding media, and drying produces the YAG powder. Processes further include introducing a dopant to the powder mixture to produce doped YAG powder.

公开(公告)号：US20220289631A1

公开(公告)日：2022-09-15

申请号：US17634160

申请日：2020-08-13

Applicant: MATERION CORPORATION

Inventor： Larry T. SMITH ,  Fritz C. GRENSING ,  Zan ASLETT ,  Robert E. KUSNER ,  Jeffrey R. CAMPBELL ,  Aaron B. SAYER ,  Kyung H. CHUNG ,  Gordon V. LU

IPC: C04B35/08 ,  C04B35/628 ,  C04B41/45 ,  C04B41/52

Abstract: A base plate containing a having a top and a bottom and comprising a beryllium oxide composition containing at least 95 wt % beryllium oxide and optionally fluorine/fluoride ion. The base plate demonstrates a clamping pressure of at least 133 kPa at a temperature of at least 600° C. and a bulk resistivity greater than 1×105 ohm-m at 800° C.