Porous Tantalum Carbide Overview

Porous tantalum carbide is an advanced material engineered to meet the demanding requirements of next-generation silicon carbide (SiC) crystal growth systems. With porosity reaching up to 75%, it offers excellent gas permeability that enables precise control of vapor-phase composition, local temperature gradients, and material flow direction within thermal environments. Compared to traditional graphite or porous graphite, which may cause carbon-related defects or suffer from limited permeability, porous tantalum carbide provides superior hardness, strength, and purity. This makes it ideal for high-temperature applications requiring strong structural integrity and thermal stability.

Specification

Properties

*The above product information is based on theoretical data. For specific requirements and detailed inquiries, please contact us.

Applications

• Molten aluminum transfer: Efficiently moves molten aluminum from furnaces to molds or processing units in casting operations.

• Non-ferrous metal casting: Suitable for pouring and transferring metals such as copper, brass, and zinc alloys.

• Foundry operations: Used for precise and controlled pouring during metal casting and molding.

• Die casting and investment casting: Handles molten metals with minimal contamination.

• Metal refining and alloying: Maintains molten metal integrity during refining and alloying processes.

• Heat treatment and melting furnaces: Ensures stable metal temperatures during melting and holding operations.

Packaging

Products are packed in customized cartons or wooden crates based on size. Small items are securely packed in polypropylene (PP) boxes, while larger items are placed in custom wooden crates. Appropriate cushioning materials are used to protect the products during transportation.

Manufacturing and Testing

Testing includes:

• Chemical composition analysis to verify purity.

• Mechanical property testing such as tensile strength, yield strength, and elongation.

• Dimensional inspection to ensure thickness, width, and length meet specifications.

• Surface quality inspection to detect defects like scratches, cracks, or inclusions.

• Hardness testing to confirm uniformity and mechanical reliability.

Frequently Asked Questions

Q1: What is porous tantalum carbide?
A1: A high-strength, high-temperature-resistant ceramic material with a controlled porous structure, designed for advanced thermal and crystal growth applications.

Q2: What is the typical porosity?
A2: Up to 75%, with 70% being a common standard, providing excellent gas permeability.

Q3: How does it compare to porous graphite?
A3: It offers higher hardness, mechanical strength, purity, and structural integrity, avoiding issues like particle shedding, low etch resistance, and limited gas permeability.

Q4: What are its main uses?
A4: Primarily in SiC crystal growth systems, vapor-phase composition control, thermal gradient regulation, and gas flow guidance in high-temperature processes.

Performance Comparison

Porous tantalum carbide’s combination of high porosity, mechanical strength, and thermal stability makes it a superior material choice for critical high-temperature and gas-permeable applications.