Ceramic material suitable for repair of a space vehicle component in a microgravity and vacuum environment, method of making same, and method of repairing a space vehicle component

A precursor of a ceramic material, consisting essentially of:

• allylhydridopolycarbosilane;
• and
• a ceramic powder consisting of a mixture of silicon carbide, zirconium diboride, and yttrium oxide.

7-8. (canceled)

(canceled)

A method of forming a precursor of a ceramic material, comprising:

• mixing a polycarbosilane and a ceramic powder to form a precursor of a ceramic material the ceramic powder consisting of a mixture of silicon carbide, zirconium diboride, and yttrium oxide.

(canceled)

A method of forming a precursor of a ceramic material comprising:

• mixing allylhydridopolycarbosilane and a ceramic powder to form a precursor of a ceramic material, the ceramic powder consisting of a mixture of silicon carbide, zirconium diboride, and yttrium oxide.

17-18. (canceled)

(canceled)

22-23. (canceled)

(canceled)

A repaired substrate capable of withstanding conditions experienced by a space vehicle reentering the Earth's atmosphere from space, the repaired substrate comprising:

• a substrate having at least one of a void, vug, gap, crack, and hole, the at least one of a void, vug, gap, crack, and hole comprising a cured precursor of a ceramic material therein, wherein an uncured precursor of the ceramic material consists essentially of allylhydridopolycarbosilane and a ceramic powder consisting of a mixture of silicon carbide, zirconium diboride, and yttrium oxide and wherein the cured precursor of the ceramic material is formulated to convert from a preceramic polymer to a ceramic material under reentry conditions.

36-37. (canceled)

A precursor of a ceramic material, comprising:

• a silicon-based, preceramic polymer;
• and
• a ceramic powder consisting of a mixture of 47.5% by weight of silicon carbide, 47.5% by weight of zirconium diboride, and 5% by weight of yttrium oxide.

A method of forming a precursor of a ceramic material, comprising:

• mixing a silicon-based, preceramic polymer and a ceramic powder to form a precursor of a ceramic material, the precursor of the ceramic material consisting of a mixture of 47.5% by weight of silicon carbide, 47.5% by weight of zirconium diboride, and 5% by weight of yttrium oxide.

A precursor of a ceramic material, comprising:

• from approximately 10% by weight to approximately 20% by weight of allylhydridopolycarbosilane;
• and
• a ceramic powder consisting of a mixture of silicon carbide, zirconium diboride, and yttrium oxide.

A precursor of a ceramic material, consisting of:

• at least one silicon-based, preceramic polymer;
• and
• a ceramic powder consisting of a mixture of silicon carbide, yttrium oxide, and at least one of hafnium boride, hafnium carbide, and hafnium oxide.