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ZTA Composite Zirconia Toughened Alumina Grinding Balls Pebbles Impact Resistance

Specifications

Brand Name :

Zhongli

Model Number :

AGB-01

Certification :

CE ISO

Place of Origin :

China

MOQ :

1kg

Payment Terms :

L/C,T/T,Western Union

Supply Ability :

40-200ton per month

Delivery Time :

within 15 days

Packaging Details :

plastic + barrel

Hardness :

9 Mohs

Packing Density :

3.6-3.8 g/cm3

Water Absorption :

≤0.01%

Thermal Expansion Coefficient :

5x10^-6/℃

Size :

1mm-50mm

Shape :

Spherical

Material :

Alumina

Chemical Resistance :

Excellent

Crushing Strength :

≥2000N

Density :

3.6-3.9 g/cm3

Thermal Conductivity :

Low

Abrasion Resistance :

Excellent

Usage :

Grinding and milling applications

Color :

White

Description

Product Description

ZTA Composite Balls: Zirconia-Toughened Alumina for Impact Resistance

Name: ZTA Composite Zirconia Toughened Alumina Grinding Balls Pebbles Impact Resistance
Brand: Zhongli
Price: 1 USD

Introduction

In the ever-evolving world of advanced materials, Zirconia-Toughened Alumina (ZTA) composite balls have emerged as a game-changer, especially in applications requiring high impact resistance. These innovative materials combine the strengths of alumina and zirconia, resulting in superior toughness and wear resistance.

Understanding Zirconia-Toughened Alumina

Zirconia-Toughened Alumina (ZTA) is a composite material that integrates alumina and zirconia to enhance mechanical strength and fracture toughness. This combination leverages alumina's hardness and thermal stability with zirconia's superior fracture toughness, creating a material that is not only robust but also versatile across different applications.

Key Properties of ZTA

Increased Fracture Toughness: ZTA exhibits remarkable fracture toughness compared to other alumina-based materials, making it ideal for components subjected to impact loading.
Excellent Wear Resistance: The sintering process of ZTA results in a smooth microstructure, providing superior wear performance.
Good Thermal Conductivity: ZTA materials efficiently dissipate heat generated by friction, enhancing their durability in high-temperature applications.

Applications of ZTA Composite Balls

ZTA composite balls are extensively used in various industrial applications due to their enhanced impact resistance and wear properties. Here are some key applications:

Industrial Grinding

ZTA composite balls have revolutionized grinding media, offering 2 to 15 times better wear resistance than high alumina media. They are effectively used in vertical mills, horizontal mills, agitated media mills, and stirred media mills, providing superior performance and cost savings.

Mining and Mineral Processing

In mining operations, ZTA composite balls improve grinding efficiency, reduce contamination, and ensure longer product life cycles. Their high impact strength makes them suitable for both wet and dry grinding processes.

Manufacturing and Electronics

ZTA's toughness and chemical inertness make it ideal for cutting tools, bearings, pumps, and fluid management components. Their ability to withstand stress and resist chemical corrosion ensures reliability in demanding manufacturing environments.

Medical and Aerospace

Due to their biocompatibility and thermal resistance, ZTA composite balls are used in medical applications, including dental and orthopedic implants. In aerospace, their durability and stability under thermal stress are crucial for performance and safety.

Advantages of ZTA Composite Balls

Superior Mechanical Properties

ZTA composite balls boast exceptional mechanical properties, including high hardness, flexural strength, and compressive strength. These attributes make them suitable for applications where durability and impact resistance are paramount.

Cost-Effective Solution

By incorporating zirconia into alumina, ZTA provides a cost-effective alternative to pure zirconia, addressing both performance and economic considerations. This makes ZTA an attractive choice for industries looking to optimize costs without compromising quality.

Customizable Composition

The zirconia content in ZTA can be tailored to meet specific application requirements, allowing for customization of properties such as toughness and thermal expansion. This flexibility ensures that ZTA can be adapted to diverse industrial needs.

●Chemical Composition:

Composition	Al₂O₃	SIO₂	CaO+MgO	Fe₂O₃
Wt%	≥92	7 max	≤2	＜0.1

●Typical Properties:

Specific Gravity

g/cm³

Bulk Density kg/L

Hardness

Moh’s

Water Absorption

Self wearing loss %(24hrs)

Compression

Mpa

≥3.65

≥2.2

＜0.01

≤0.012

≥2000

● Sizes Φ:

Size(mm)	Size(mm)	Size(mm)	Size(mm)
0.5-1.0	6.0	20.0	70.0
1.0	8.0	25.0	80.0
2.0	10.0	30.0	90.0
3.0	13.0	40.0	100.0
4.0	15.0	50.0
5.0	18.0	60.0

1. Mechanical & Physical Properties

Property	Alumina (92%)	Alumina (99%)	Zirconia	Steel	Silica Sand
Density (g/cm³)	3.6	3.9	6.0	7.8	2.2
Hardness (Mohs/HV)	9 (~1,500 HV)	9 (~1,800 HV)	8.5	6-7	7
Wear Rate (g/ton)	10–50	5–20	1–5	100+	300+
Compressive Strength	2,000 MPa	2,500 MPa	2,200 MPa	500 MPa	Low

Key Takeaways:

99% Alumina offers 30% lower wear than 92% grade.
2–5x longer lifespan vs. steel in abrasive slurries.
Harder than zirconia but less tough (ideal for fine grinding).

2. Chemical & Thermal Resistance

Property	Alumina (99%)	Performance Impact
Chemical Inertness	Resists pH 1–14	Safe for acids/alkalis, pharmaceuticals.
Max Temperature	1,600°C	Stable in kilns, calcination.
Thermal Shock	Moderate	Avoid rapid quenching (>200°C/min).
Contamination Risk	None	Zero metal ions (critical for Li-ion batteries).

Vs. Competitors:

Beats steel in corrosion resistance.
Outperforms silica sand in wear & consistency.

3. Grinding Efficiency

Particle Size Reduction: Achieves sub-micron fineness (D50 < 1µm) in wet/dry mills.
Speed: Higher density (vs. silica) improves kinetic energy transfer.
Consistency: Uniform shape/size prevents clogging in bead mills.

Best For:

High-purity materials (e.g., ceramics, electronics powders).
Slurry processing (paints, dyes).

4. Industry-Specific Performance

Industry	Benefit of Alumina Balls
Mining	50% lower replacement cost vs. steel in ore grinding.
Pharma	FDA-compliant, no endotoxin release.
Batteries	Prevents Fe/Ni contamination in cathode materials.
Paints	Maintains color purity (no metal leaching).

5. Cost vs. Lifetime Analysis

Media Type	Cost per kg	Lifespan (hours)	Cost per Ton Ground
Alumina (92%)	$5–10	2,000–3,000	$0.50–1.00
Steel	$2–4	500–800	$2.00–4.00
Zirconia	$50–100	5,000+	$0.20–0.50

Trade-Off:

Alumina balances cost and performance – Ideal when zirconia is over-spec.

Performance Summary: Why Choose Alumina?

✅ Cost-Effective: 3x cheaper than zirconia for moderate abrasion.
✅ High-Purity: 99.9% Al₂O₃ for sensitive applications (e.g., pharma).
✅ Versatile: Works in ball/attritor/planetary mills.
✅ Low Maintenance: Non-corrosive, easy to clean.

Limitations:

Not for high-impact milling (e.g., hammer mills).
Thermal shock risk in rapid cooling applications.

Need Custom Alumina Balls?

We supply:

Sizes: 1mm–50mm (±0.01mm tolerance).
Grades: 92%, 95%, 99%, ZTA-composite.
Certifications: ISO 9001, RoHS, FDA (for pharma).

●Package:

25KG/woven bag,1000KG-1250KG for one pallet with shrink wrapped