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MARS IMPEX

MPCVD Diamond Growing Machines & Plasma Reactors

Engineered in Surat, Gujarat by MARS IMPEX. Next-generation Microwave Plasma Chemical Vapor Deposition systems delivering high diamond growth yield, Type IIa purity, and exceptional repeatability for fine gems, semiconductor heat sinks, and optical elements.

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How MPCVD Diamond Technology Works

Microwave Plasma Chemical Vapor Deposition (MPCVD) is the worldwide gold standard for synthesizing gemological-quality Type IIa diamonds and ultra-high thermal conductivity semiconductor diamond wafers. Unlike HPHT which uses massive hydraulic presses and metallic catalyst solvents, MPCVD operates cleanly in a high-purity vacuum atmosphere.

Inside the resonant microwave chamber, methane (CH4) and hydrogen (H2) gases are ionized by 2.45 GHz or 915 MHz electromagnetic waves. Hydrogen radicals selectively etch any non-diamond graphitic carbon, while reactive carbon radicals deposit epitaxially onto high-purity diamond seed plates at rates of 10 to 35 μm per hour.

Type IIa Gemstones

Produces ultra-clear, nitrogen-free diamonds (D-F color grade) ideal for jewelry markets.

2200 W/mK Thermal

Unmatched thermal conductivity for 5G GaN power amplifiers and quantum sensing.

MPCVD Diamond Plasma Reactor
2.45GHz
Resonant Microwave
Plasma Cavity

MPCVD Diamond Reactor Parameter Matrix

Detailed engineering data for Mars Impex standard and high-capacity microwave plasma reactors.

2.45 GHz Commercial Reactor (Standard)
Generator Power 6.0 kW – 10.0 kW (Magnetron / Solid-State)
Substrate Stage Diameter Ø 50 mm (2") – Ø 100 mm (4")
Seed Capacity Per Run 15 – 45+ Diamond Seeds
Growth Rate 10 – 35 μm / hour (Single-Crystal)
Operating Pressure 80 – 250 Torr
Substrate Temperature 850 – 1200 °C (Optical Closed-Loop)
Gas Delivery Channels 4-Channel Digital MFCs (CH4, H2, O2, N2)
Chamber Construction Double-Walled Water-Cooled SS316L
915 MHz High-Power Industrial Model
Generator Power 30 kW – 60 kW Industrial Microwave
Substrate Stage Diameter Ø 150 mm (6") – Ø 200 mm (8") Wafers
Seed Capacity Per Run 100+ Diamond Seeds / Large Wafers
Growth Rate Up to 40+ μm / hour
Vacuum Integrity < 1 × 10-6 Torr Base Vacuum
Cooling System High-Flow Closed-Loop DI Chiller
Automation Architecture Industrial PLC + SCADA Remote Telemetry
Target Application Semiconductor Wafers & Mega-Yield Gemstones

Cross-Industry MPCVD Diamond Synthesis

Explore how our reactors power applications from Surat's gemstone market to global semiconductor cooling.

Lab-Grown Gemstones Gemstones

Lab-Grown Gemstones

Cultivating high-clarity, Type IIa single-crystal diamonds with high growth rate, minimal internal strain, and ethical sustainability.

Semiconductor Heat Sinks Semiconductors

Semiconductor Thermal Substrates

With diamond's thermal conductivity of 2200 W/mK, our wafers prevent thermal throttling in 5G GaN RF amplifiers and EV power modules.

Laser Windows & Optical Elements Laser Optics

High-Power Laser Optics

Ultra-low absorption CVD diamond optical exit windows and infrared domes designed for multi-kilowatt CO2 and fiber lasers.

Configure a Machine for Your Facility

Speak directly with our engineering team in Surat to customize substrate size, microwave generator, and gas delivery.

MARS IMPEX ENGINEERING