Techniques herein provide effective smoothing and planarization of various surfaces. Techniques include using multiple particle beams to correct different aspects of a given workpiece. A workpiece needing correction from scratches and roughness is treated with a first particle beam that reduces scratches on a working surface of the workpiece using an inert beam. The workpiece is also treated with a second particle beam that is chemically reactive and reduces step-height values across the working surface of the workpiece, thereby producing a surface with reduced scratches and roughness.

A method of processing a ceramic matrix composite (CMC) component includes extracting silicon from a surface region of the CMC component such that free silicon is present in the surface region at a reduced amount of about 5 vol. % or less. The extraction comprises contacting the surface region with a wicking medium comprising an element reactive with silicon. The extraction is carried out at an elevated temperature prior to assembling the CMC component with a metal component.

A method of processing a ceramic matrix composite (CMC) component includes extracting silicon from a surface region of the CMC component such that free silicon is present in the surface region at a reduced amount of about 5 vol. % or less. The extraction comprises contacting the surface region with a wicking medium comprising an element reactive with silicon. The extraction is carried out at an elevated temperature prior to assembling the CMC component with a metal component.

A dental implant with a post element is inserted into a jawbone with a mounting element attached to the post element, with the post element designed as a ceramic body of yttrium- and/or aluminum oxide stabilized zirconium oxide. The dental implant has improved ingrowth during osseous implant healing. The surface of the dental implant is provided with at least one partial area that has nanoscopic pores or an otherwise executed nanoscopic structure that has a depletion zone with a reduced yttrium- and/or aluminum oxide element.

A dental implant having a surface made of a ceramic material. At least a part of the surface includes recesses and cavities formed by removal of discrete grains having an average grain size from 0.1 m to 0.6 m and/or agglomerates of these grains from the ceramic material.

A dental implant having a surface made of a ceramic material. At least a part of the surface includes recesses and cavities formed by removal of discrete grains having an average grain size from 0.1 m to 0.6 m and/or agglomerates of these grains from the ceramic material.

An article including a ceramic material and featuring a machined surface that is characteristic of cold ablation laser machining, wherein the machined surface exhibits no visible oxidation.

A laser machining apparatus and technique based on cold-ablation, but modified or augmented with an inert assist gas, which minimizes the deleterious surface modifications and mitigates the oxide formation associated with laser machining.

An article including a ceramic material and featuring a machined surface that is characteristic of cold ablation laser machining, wherein the machined surface exhibits no visible oxidation.

A laser machining apparatus and technique based on cold-ablation, but modified or augmented with an inert assist gas, which minimizes the deleterious surface modifications and mitigates the oxide formation associated with laser machining.

Various embodiments include a metal-repaired ceramic matrix composite (CMC) article, and a method of repairing a CMC article having a defect. Particular embodiments include a method including: removing a defect-containing portion of the CMC article; forming at least one opening in a remaining portion of the CMC article; preparing a metal repair preform for replacing at least the removed portion of the CMC article, wherein a portion of the metal repair preform complements the at least one opening; and attaching the metal repair preform to the remaining portion of the CMC article.

Various embodiments include a metal-repaired ceramic matrix composite (CMC) article, and a method of repairing a CMC article having a defect. Particular embodiments include a method including: removing a defect-containing portion of the CMC article; forming at least one opening in a remaining portion of the CMC article; preparing a metal repair preform for replacing at least the removed portion of the CMC article, wherein a portion of the metal repair preform complements the at least one opening; and attaching the metal repair preform to the remaining portion of the CMC article.