Sinter-bonded hybrid article, method for forming hybrid article, and method for closing aperture

A method for forming a hybrid article, comprising:

• disposing a core in a die, the core including a lateral surface;
• forming a gap between the lateral surface and the die, the gap circumscribing the lateral surface;
• introducing a slurry into the gap, the slurry including a first metallic material having a first melting point, and a second metallic material having a second melting point, the first melting point being higher than the second melting point;
• coating the lateral surface with the slurry;
• and
• sintering the slurry to form a coating circumscribing the lateral surface, forming the hybrid article, the coating including about 35% to about 95% of the first metallic material and about 5% to about 65% of the second metallic material,
• wherein the coating is sinter-bonded to the core.

A method for closing an aperture of an article, comprising:

• inserting a hybrid article into the aperture, the hybrid article including:
• a core including a lateral surface and a core material, and
• a coating disposed on and circumscribing the lateral surface, the coating including about 35% to about 95% of a first metallic material having a first melting point, and about 5% to about 65% of a second metallic material having a second melting point, the first melting point being higher than the second melting point,
• wherein the coating is sinter-bonded to the core;
• and
• closing the aperture, closing the aperture including a technique selected from the group consisting of brazing the hybrid article to the article, welding the aperture with the hybrid article serving as a weld filler, and combinations thereof.