公开(公告)号：WO2022164542A2

公开(公告)日：2022-08-04

申请号：PCT/US2021/064281

申请日：2021-12-20

Applicant: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA

Inventor： CORRAL, Erica

IPC: C04B35/584 ,  C04B35/587 ,  C04B35/645 ,  C04B2235/3206 ,  C04B2235/3262 ,  C04B2235/3418 ,  C04B2235/3826 ,  C04B2235/383 ,  C04B2235/40 ,  C04B2235/401 ,  C04B2235/422 ,  C04B2235/428 ,  C04B2235/5454 ,  C04B2235/6567 ,  C04B2235/72 ,  C04B2235/762 ,  C04B2235/767 ,  C04B2235/77 ,  C04B2235/785 ,  C04B2235/788 ,  C04B2235/87 ,  C04B2235/96 ,  C04B2235/9607 ,  C04B35/5935

Abstract: Disclosed are ceramic powder compositions that include Si, N, O, C, Mg, and/or Mn in tailored combinations of different crystalline phases for producing high temperature-resistant and high strength ceramic products. In some aspects, a ceramic powder for producing high temperature-resistant and/or high mechanical strength materials comprises a silicon nitride (Si3N4) powder, comprising Si3N4 particles having a size within a range of 30 nm to 700 nm, wherein the Si3N4 powder include alpha and beta phase silicon nitride in an amount up to about 1-100 %vol; and an impurity constituent intermixed with the Si3N4 powder within the ceramic powder, the impurity constituent comprising at least one of silicon (Si), nitrogen (N), oxygen (O), carbon (C), magnesium (Mg), or manganese (Mn), wherein the impurity constituent constitutes less than about 0.1 %wt to 15 %wt of the ceramic powder.

公开(公告)号：WO2021147411A1

公开(公告)日：2021-07-29

申请号：PCT/CN2020/123536

申请日：2020-10-26

Applicant: 武汉科技大学

Inventor： 张美杰 ,  夏求林 ,  顾华志 ,  黄奥 ,  付绿平 ,  杨爽

IPC: C04B35/66 ,  C04B35/10 ,  C04B35/622 ,  C04B2235/3217 ,  C04B2235/3418 ,  C04B2235/3463 ,  C04B2235/40 ,  C04B2235/9607

Abstract: 一种相变蓄热自流式耐火浇注料及其制备方法。以55～75质量份的矾土颗粒、10～30质量份的矾土细粉、6～10质量份的α-氧化铝粉、1～3质量份的硅微粉和4～6质量份的铝酸钙水泥为原料，混合得混合料。向混合料中加入0.1～0.3质量份的减水剂和6～7质量份的水，搅拌均匀，即得矾土基自流式浇注料；再将55～75质量份的合金@陶瓷大胶囊颗粒堆积于模具中，得到浇注料骨架；然后将所述矾土基自流式浇注料浇注到所述浇注料骨架中，制得相变蓄热自流式耐火浇注料。其工艺简单，浇注料蓄热密度大、强度高、抗热震性能好、高温应用时热效率高、温度稳定。