公开(公告)号：US20240326288A1

公开(公告)日：2024-10-03

申请号：US18739794

申请日：2024-06-11

申请人： Purdue Research Foundation

发明人： Jeffrey Paul Youngblood ,  Rodney Wayne Trice ,  Andrew Schlup ,  William Costakis

IPC分类号： B28B3/02 ,  C01F7/027 ,  C04B35/115 ,  C04B35/626 ,  C04B35/645

CPC分类号： B28B3/025 ,  C01F7/027 ,  C04B35/115 ,  C04B35/62605 ,  C04B35/645 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/20 ,  C04B2235/5292

摘要： The present disclosure provides a transparent alumina-based plate, and a hot-pressing method to make the transparent alumina-based plate from platelet alumina. Alumina powder with a platelet morphology was hot-pressed to transparency with pre-load pressures of about 0-8 MPa, maximum temperatures of about 1750-1825° C., maximum pressures of about 2.5-80 MPa, and isothermal hold times of 1-7 hours. A novel alumina-based plate has been prepared, wherein the plate has a thickness of 2-5 mm, an in-line transmission of at least 60-75% for a light with a wavelength range of 645-2500 nm, an in-line transmission variance of

公开(公告)号：US12076886B2

公开(公告)日：2024-09-03

申请号：US17121840

申请日：2020-12-15

申请人： Purdue Research Foundation

发明人： Jeffrey Paul Youngblood ,  Rodney Wayne Trice ,  Andrew Schlup ,  William Costakis

IPC分类号： B28B3/02 ,  C01F7/027 ,  C04B35/115 ,  C04B35/626 ,  C04B35/645

CPC分类号： B28B3/025 ,  C01F7/027 ,  C04B35/115 ,  C04B35/62605 ,  C04B35/645 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/20 ,  C04B2235/5292

摘要： The present disclosure provides a transparent alumina-based plate, and a hot-pressing method to make the transparent alumina-based plate from platelet alumina. Alumina powder with a platelet morphology was hot-pressed to transparency with pre-load pressures of about 0-8 MPa, maximum temperatures of about 1750-1825° C., maximum pressures of about 2.5-80 MPa, and isothermal hold times of 1-7 hours. A novel alumina-based plate has been prepared, wherein the plate has a thickness of 2-5 mm, an in-line transmission of at least 60-75% for a light with a wavelength range of 645-2500 nm, an in-line transmission variance of

公开(公告)号：US20210362369A1

公开(公告)日：2021-11-25

申请号：US17121840

申请日：2020-12-15

申请人： Purdue Research Foundation

发明人： Jeffrey Paul Youngblood ,  Rodney Wayne Trice ,  Andrew Schlup ,  William Costakis

IPC分类号： B28B3/02 ,  C01F7/02

摘要： The present disclosure provides a transparent alumina-based plate, and a hot-pressing method to make the transparent alumina-based plate from platelet alumina. Alumina powder with a platelet morphology was hot-pressed to transparency with pre-load pressures of about 0-8 MPa, maximum temperatures of about 1750-1825° C., maximum pressures of about 2.5-80 MPa, and isothermal hold times of 1-7 hours. A novel alumina-based plate has been prepared, wherein the plate has a thickness of 2-5 mm, an in-line transmission of at least 60-75% for a light with a wavelength range of 645-2500 nm, an in-line transmission variance of