公开(公告)号：US08318261B2

公开(公告)日：2012-11-27

申请号：US12995369

申请日：2009-05-28

申请人： Filofteia-Laura Toma ,  Lutz-Michael Berger ,  Carl Christoph Stahr ,  Tobias Naumann ,  Stefan Langner

发明人： Filofteia-Laura Toma ,  Lutz-Michael Berger ,  Carl Christoph Stahr ,  Tobias Naumann ,  Stefan Langner

IPC分类号： C04B35/00

CPC分类号： C23C4/134 ,  C23C4/11 ,  C23C4/123 ,  C23C4/129

摘要： The disclosure provides a method of producing thermally sprayed Al2O3 coatings having a high content of corundum without any property-reducing additives. The coatings may be utilized particularly in the field of electrical insulation, as a dielectric, and as protection from wear. The thermally sprayed Al2O3 coatings have a porosity of no more than 19%, and a high content of α-Al2O3 (content of corundum) of at least 72% by volume. The coatings have a specific electrical resistance of >1·1012 Ohms·cm, and a purity of >97%. The production of said coatings is carried out utilizing aqueous or alcoholic suspensions made from substantially pure α-Al2O3, having a grain size of >100 nm by thermal spraying.

摘要翻译： 本公开提供了一种生产具有高含量刚玉的热喷涂Al 2 O 3涂层的方法，而没有任何降低性能的添加剂。 涂层可以特别用于电绝缘领域，作为电介质，以及作为防磨损领域。 热喷涂的Al2O3涂层的孔隙率不超过19％，α-Al2O3含量高（刚玉含量）至少为72％（体积）。 涂层具有> 1·1012欧姆·厘米的比电阻，纯度> 97％。 所述涂层的生产使用通过热喷涂具有> 100nm的粒度的基本上纯的α-Al 2 O 3制成的水性或醇类悬浮液进行。

公开(公告)号：US20110123431A1

公开(公告)日：2011-05-26

申请号：US12995369

申请日：2009-05-28

申请人： Filofteia-Laura Toma ,  Lutz-Michael Berger ,  Carl Christoph Stahr ,  Tobias Naumann ,  Stefan Langner

发明人： Filofteia-Laura Toma ,  Lutz-Michael Berger ,  Carl Christoph Stahr ,  Tobias Naumann ,  Stefan Langner

IPC分类号： B05D1/08 ,  C01F7/02 ,  B05D1/02 ,  C23C4/10

CPC分类号： C23C4/134 ,  C23C4/11 ,  C23C4/123 ,  C23C4/129

摘要： The invention relates to thermally sprayed Al2O3 layers having a high content of corundum without any property-reducing additives, and to a method for the production of said layers. The invention may be utilized particularly in the field of electrical insulation, as a dielectric, and as protection from wear. According to the invention, the thermally sprayed Al2O3 layers are characterized in that they have a porosity of no more than 19%, and a high content of α-Al2O3 (content of corundum) of at least 72% by volume. The layers have a specific electrical resistance of >1·1012 Ohms·cm, and a purity of >97%. The production according to the invention of said layers is carried out utilizing aqueous or alcoholic suspensions made from pure α-Al2O3, having a grain size of >100 nm by means of a method from the group of thermal spraying.

摘要翻译： 本发明涉及具有高含量的刚玉而没有任何降低性能的添加剂的热喷涂Al 2 O 3层以及所述层的制造方法。 本发明可以特别用于电绝缘领域，作为电介质，以及作为防磨损领域。 根据本发明，热喷涂的Al 2 O 3层的特征在于它们具有不大于19％的孔隙率，并且高含量的α-Al 2 O 3（刚玉含量）为至少72体积％。 这些层的比电阻> 1·1012欧姆·厘米，纯度> 97％。 根据本发明的所述层的生产通过利用热喷涂组中的方法利用粒径> 100nm的纯α-Al 2 O 3水溶液或醇悬浮液进行。