Knowledge What is the Growth Rate of CVD Diamond? 5 Key Insights
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Tech Team · Kintek Solution

Updated 1 month ago

What is the Growth Rate of CVD Diamond? 5 Key Insights

The growth rate of CVD (Chemical Vapour Deposition) diamonds can vary depending on several factors.

These factors include the size of the diamond being produced and the efficiency of the technology used.

According to the references provided, CVD diamond growth rates can range from 50 to 150 μm/h.

This is significantly higher than standard processes for making polycrystalline MPCVD diamond.

Top CVD diamond producers are capable of creating 1-carat diamonds in less than a month.

Slightly smaller diamonds can be produced in as little as two weeks.

Fancy color diamonds, like yellow CVD diamonds, can be produced in 5 to 10 days.

This is due to the addition of nitrogen, which speeds up the crystallization process.

It is important to note that the CVD growth chambers have evolved over time.

This evolution allows for the growth of multiple seeds simultaneously.

While the exact capacity of the reactor seed is a closely guarded secret, it is reported that some CVD manufacturing systems can grow on 50 or more seeds simultaneously.

The growth process of CVD diamonds involves carbon atoms attaching to the seed diamond layer by layer.

This results in the growth of a new, larger diamond that is identical to natural diamonds.

This process is slow and relies on extremely high temperatures and high-pressure conditions.

The growth rate is typically estimated to be around 0.1-10 microns per hour for larger surfaces.

Smaller surfaces grow at slower speeds.

In conclusion, the growth rate of CVD diamonds can vary.

However, it generally takes about a month to produce a one-carat CVD diamond.

Advancements in CVD technology have allowed for faster growth rates and the production of larger, high-quality diamonds.

Continue exploring, consult our experts

What is the Growth Rate of CVD Diamond? 5 Key Insights

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