•  
agra,ahmedabad,ajmer,akola,aligarh,ambala,amravati,amritsar,aurangabad,ayodhya,bangalore,bareilly,bathinda,bhagalpur,bhilai,bhiwani,bhopal,bhubaneswar,bikaner,bilaspur,bokaro,chandigarh,chennai,coimbatore,cuttack,dehradun,delhi ncr,dhanbad,dibrugarh,durgapur,faridabad,ferozpur,gandhinagar,gaya,ghaziabad,goa,gorakhpur,greater noida,gurugram,guwahati,gwalior,haldwani,haridwar,hisar,hyderabad,indore,jabalpur,jaipur,jalandhar,jammu,jamshedpur,jhansi,jodhpur,jorhat,kaithal,kanpur,karimnagar,karnal,kashipur,khammam,kharagpur,kochi,kolhapur,kolkata,kota,kottayam,kozhikode,kurnool,kurukshetra,latur,lucknow,ludhiana,madurai,mangaluru,mathura,meerut,moradabad,mumbai,muzaffarpur,mysore,nagpur,nanded,narnaul,nashik,nellore,noida,palwal,panchkula,panipat,pathankot,patiala,patna,prayagraj,puducherry,pune,raipur,rajahmundry,ranchi,rewa,rewari,rohtak,rudrapur,saharanpur,salem,secunderabad,silchar,siliguri,sirsa,solapur,sri-ganganagar,srinagar,surat,thrissur,tinsukia,tiruchirapalli,tirupati,trivandrum,udaipur,udhampur,ujjain,vadodara,vapi,varanasi,vellore,vijayawada,visakhapatnam,warangal,yamuna-nagar
Aluminum Oxide

Aluminum Oxide

AlO is a naturally occurring common compound. It is useful in a variety of industries, most importantly in the manufacture of aluminium. The substance is used in the manufacture of industrial ceramics. Corundum, its most common crystal form, also has several variants of gem-quality.

Chemical Characteristics

  • Aluminum oxide comes in a variety of forms, like non-crystalline and crystalline varieties.
  • It's also got a high thermal conductivity.
  • Aluminum oxide's inflated melting point makes it an excellent refractory material for lining for appliances that work at high-temperature such as furnaces, kilns, crucibles, incinerators, and reactors of different types.
  • Aluminum oxide has the chemical formula Al2O3.
  • It's an electrical insulator, which means it does not conduct electricity.
  • Corundum's hardness makes it an effective abrasive in its crystal form.

Utilization in Aluminum Production

  • Aluminum oxide is most usually used in the production of aluminium metal.
  • The anodizing process can change the thickness and other properties of the oxide layer.
  • This prevents the aluminium from weakening and corrosion.
  • Metallic aluminium is highly reactive with oxygen, which could lead to corrosion.
  • Aluminum oxide is also a derivative of aluminium smelting.
  • When aluminium reacts with oxygen to form aluminium oxide, a thin layer forms that prevents it from oxidation.

Gemstones of Corundum

  • Corundum is the most usual crystal form of aluminium oxide.
  • Sapphires and rubies are both gem-quality varieties of corundum.
  • They get their distinct colour from minor impurities.
  • The traces of chromium in rubies give them deep red colour and laser qualities.
  • Sapphires come in diverse colours due to impurities such as titanium and iron.
  • Because of the hardness and stiffness of corundum, they can be used as abrasives and as integrants in sharp cutting tools.

Ceramic Applications

  • Aluminum oxide (AlO), also known as alumina, is highly used in engineering as ceramics.
  • High-temperature voltage and electrical insulators, instrumentation parts for thermal test machines, gas laser tubes, seal rings, and other equipment of laboratory are examples of these.
  • It is wear-resistant and hard, resistant to alkali and acid attacks, has high strength, is stiff and has good thermal conductivity, making it useful in the manufacture of a broad range of ceramic products.
  • AlO is also used to create ballistic armour.

Other Applications

  • It is used as an abrasive in sandpaper.
  • It is also used as a less expensive option for industrial diamonds due to its strength and hardness.
  • The most important is in the production of metallic aluminium.
  • It's also a common component of sunscreen.
  • Aluminum oxide is used as a filler in plastics because it is white, chemically inert, and non-toxic.
  • Aluminum oxide is found in some DVD and CD polishing kits.
  • Aluminum oxide is used as a polishing agent by dentists to remove teeth stains.
  • It has the same properties that make it a good ingredient in toothpaste.

Properties:

  • Boiling point: 2,977 °C
     
  • Density: 3.95–4.1 g/cm3
     
  • Molar mass: 101.96 g·mol−1
     
  • Melting point: 2,072 °C

NEET Related Links

NEET Exam 

NEET  Exam Dates

NEET  Exam pattern

NEET  Syllabus

NEET  Eligibility Criteria

NEET  Application

NEET UG Counselling

NEET FAQ

NEET UG Result

NEET  Cut Off

JEE MAIN Related Links

JEE Main 

JEE Main Rank Predictor 

JEE Main College Predictor 

JEE Main  Exam Dates

JEE Main  Exam pattern

JEE Main  Application

JEE Main  Eligibility Criteria

JEE Main  Syllabus

JEE Main  Physics Syllabus

JEE Main  Maths Syllabus

JEE Main  Chemistry Syllabus

JEE Main  Admit Card

JEE Main  Counselling

JEE Main marks vs rank vs percentile

JEE Advanced Related Links

JEE Advanced  Exam Dates

JEE Advanced  Application

JEE Advanced  Eligibility Criteria

JEE Advanced  Syllabus

JEE Advanced  Maths Syllabus

JEE Advanced  Physics Syllabus

JEE Advanced  Chemistry Syllabus

JEE Advanced Exam Result

JEE Advanced Exam Dates

JEE Advanced Registration Dates

CUET Related Links

CUET  Eligibility Criteria

CUET  Admit Card

CUET  Exam Pattern

CUET  FAQs

CUET  Counselling

CUET  Syllabus

CUET  Result

CUET  Answer Key

CUET  Preparation

CUET CUTOFF

CUET  Application Form

Important Topics

Talk to our expert
Resend OTP Timer =
By submitting up, I agree to receive all the Whatsapp communication on my registered number and Aakash terms and conditions and privacy policy