公开(公告)号：US20240228851A1

公开(公告)日：2024-07-11

申请号：US18200293

申请日：2023-05-22

Applicant: ANHUI UNIVERSITY OF TECHNOLOGY

Inventor： Dong WANG ,  Sensen DENG ,  Aiquan JIA ,  Mengxue LI

IPC: C09K5/04

CPC classification number: C09K5/045 ,  C09K2205/106 ,  C09K2205/122 ,  C09K2205/32

Abstract: Provided is a near-azeotropic refrigerant of a ternary mixture CO2/R41/R170, including the following components by mass percentage: 10% to 64% of CO2, 10% to 47% of R41, and 26% to 52% of R170. The near-azeotropic refrigerant has a low global warming potential (GWP) and a low temperature glide, and can still maintain a near-azeotropic effect at −90° C.

公开(公告)号：US20230271886A1

公开(公告)日：2023-08-31

申请号：US18301214

申请日：2023-04-15

Applicant: Anhui University of Technology

Inventor： Songlin RAN ,  Jun ZHAO ,  Xing JIN ,  Dong WANG ,  Xiang DING

IPC: C04B35/563 ,  C04B35/626 ,  C04B35/58 ,  C04B35/628

CPC classification number: C04B35/563 ,  C04B35/62605 ,  C04B35/58071 ,  C04B35/62802 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/661 ,  C04B2235/96 ,  C04B2235/786

Abstract: An electro-conductive B4C—TiB2 has a microstructure in which large B4C grains are coated by small TiB2 grains. The composite ceramic includes 10˜30% by volume of TiB2. A method for preparing the electro-conductive B4C—TiB2 composite ceramic includes: (1) weighing B4C, TiC, and amorphous B powder; (2) mixing evenly and drying thoroughly the powders; and (3) loading the mixed powder into a graphite mold; and placing the graphite mold in a spark plasma sintering furnace for sintering under vacuum, where the sintering is performed at 2000° C. and 50 MPa for 5˜20 min.