H.c. Starck Gmbh

Stefan Zimmerman

Steven Alfred Miller

Leonid Natan Shekhter

Prabhat Kumar

Shuwei Sun

Richard Wu

Olaf Schmidt-Park

In various embodiments, a sputtering target initially formed by ingot metallurgy or powder metallurgy and comprising a sputtering-target material is provided, the sputtering-target material (i) comprising a refractory metal, (ii) defining a recessed furrow therein, and (iii) having a first grain size and a first crystalline microstructure. A powder is spray-deposited within the furrow to form a layer therein, the layer (i) comprising the metal, (ii) having a second grain size finer than the first grain size, and (iii) having a second crystalline microstructure more random than the first crystalline microstructure. Spray-depositing the powder within the furrow forms a distinct boundary line between the layer and the sputtering-target material.

Methods of rejuvenating sputtering targets

In various embodiments, protective layers are bonded to a steel layer and connected by a layer of unmelted metal powder produced by cold spray.

Methods of joining metallic protective layers

In various embodiments, a metallic structure includes first and second clad structures each comprising a protective layer disposed over a steel layer, a joint joining the steel layers of first and second clad structures, and, directly connecting the protective layers of the first and second clad structures, a layer of metal powder disposed in contact with (i) the joint, (ii) the protective layers of the first and second clad structures, and (iii) a portion of at least one of the steel layers proximate the joint.

Protective metal-clad structures

In various embodiments, a method of joining clad structures includes providing first and second clad structures each comprising a protective layer disposed only partially over a steel layer such that an edge region of the steel layer is exposed, joining the first and second clad structures at their respective edge regions, thereby forming a joint, and cold spraying a metal powder over and in contact with (i) the joint, (ii) the edge regions, and (iii) the protective layers of the first and second clad structures, thereby directly connecting the protective layers of the first and second clad structures with a layer of unmelted metal powder.

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Kraftwerkweg, Germany

Stefan Zimmerman