Back to results
US 5,718,970 AGranted
Thermal sprayed coating containing plastic
OwnerFrank N. Longoinventor
Life of this patent
Estimating the term…
Abstract
A high temperature thermal sprayable material, such as a metal or metal oxide, is adhered to the surface of a thermal sprayable plastic particle to form a cladding layer thereon. The high temperature material cladding layer provides a thermal barrier that allows use of the plastic in a high temperature thermal spray process to create a duplex coating containing plastic.
Claims9
An article having a thermal sprayed coating, the coating being obtained by:
- (a) providing a plurality of particles, each of the particles comprising a plastic core and a particulate cladding material, selected from the group consisting of ceramics and meals having a higher melting point than the plastic core, wherein the particulate cladding material is adhered to the plastic core and wherein the particulate cladding material forms a substantially continuous, thermally protective cladding layer around the plastic core to reduce premature melting and vaporization of the plastic core;
- (b) mixing the plurality of particles with a high temperature material selected from the group consisting of ceramics and meals to obtain a blend comprising the plurality of particles and high temperature material;
- (c) thermally spraying the blend on a surface of a substrate under thermal spray conditions which melt the high temperature material and the plurality of particles.
An article having a thermal sprayed coating, the coating being obtained by:
- (a) providing a plurality of particles, each of the particles comprising:
- a plastic core,
- a first particulate cladding material, selected from the group consisting of ceramics and metals having a higher melting point than the plastic core, wherein the first particulate cladding material is adhered to the plastic core and wherein the first particulate cladding materials forms a substantially continuous, thermally protective intermediate cladding layer to reduce premature melting and vaporization of the plastic core, and
- a second particulate cladding material, selected from the group consisting of ceramics and metals having a higher melting point than the plastic core, wherein the second particulate cladding material is bonded to the first particulate cladding material with an organic binder to form an outer cladding layer;
- (b) mixing the plurality of particles with a high temperature material selected from the group consisting of ceramics and metals to obtain a blend comprising the plurality of particles and high temperature material;
- (c) thermally spraying the blend on a surface of a substrate under thermal spray conditions which melt the high temperature material and the plurality of particles.
3 more elements
Dependencies are inferred from the claim text.