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About
Ceramics

Advanced
Ceramics

Ceramics
Vs. Steel

RocCera
Ceramic

Zirconia
Alumina
Composites

Advanced Technical Ceramics

RocCera Tetragonal Zirconia (RTZ), also known as ceramic steel, is tougher than any other advanced technical ceramic available today. Imagine ceramic parts with the toughness of steel, but with greater surface hardness, higher abrasion and corrosion resistance.

Development
A family of patented zirconia ceramics and composites was developed by Dr. Sam Ghosh at Kodak Research Labs to meet Eastman Kodak's demanding film manufacturing processes; processes that do not tolerate downtime; processes that generate high surface wear in a highly corrosive atmosphere. After his retirement from Kodak, Dr. Ghosh founded RocCera LLC in 2006 to design and manufacture advanced ceramic zirconia components.

Advantages
Zirconia’s molecular structure gives it properties like those of a diamond, the hardest substance known to man. It is harder then steel, resists corrosion and has superior abrasion and wear resistance.

Net Shape Manufacturing
Net shape manufacturing focuses on the manufacture of discrete parts to net or near net dimensions. RocCera's net shape manufacturing technology eliminates diamond tooling and longer processing time associated with traditional advanced technical ceramic manufacturing for most applications, reducing cost by as much as 80%.

Chemical composition		Zirconia + 3 mole% yttria
Particle Size		0.25 – 0.45
Crystal Structure		100% Tetragonal
Density	Gram/cc	6.05
Color		Ivory
Young's Modulus @ RT	Psi (MPa)	32 million (208)
Flexural Strength @ RT	Psi (MPa)	145,000 (982)
Fracture Toughness	MPa√m	12
Vicker's Hardness	500 gram load	1300 VHN
Weibull Modulus		14
Thermal Conductivity (RT)	Cal/cm. sec. °C	0.009
Coeff of Linear Thermal Expansion (40-100°)	/°C	10.5 X 10^-6

Properties of RocCera Tetragonal Zirconia (RTZ)